Evaluation of lettuce germplasm for resistance to impatiens necrotic spot virus

Recently, impatiens necrotic spot virus (INSV) has emerged as a major pathogen of lettuce in the Salinas Valley of California. The virus is a member of the genus Orthotospovirus , and under natural conditions, is transmitted by the tiny insect, western flower thrips. Due to the high efficiency of vi...

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Bibliographic Details
Published in:Euphytica 2024-03, Vol.220 (3), p.33, Article 33
Main Authors: Richardson, Kelley L., Nayak, Santosh, Hasegawa, Daniel K., Eriksen, Renée L.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Biotechnology
Color
Controlled conditions
Critical components
Cultivars
Disease control
Disease resistance
Field tests
Germplasm
Horticulture
Host plants
Inoculation
Insects
Leaves
Lettuce
Life Sciences
Orthotospovirus
Pest resistance
Plant breeding
Plant Genetics and Genomics
Plant Pathology
Plant Physiology
Plant Sciences
Spot
Stability analysis
Vectors
Vegetables
Viruses
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Summary:Recently, impatiens necrotic spot virus (INSV) has emerged as a major pathogen of lettuce in the Salinas Valley of California. The virus is a member of the genus Orthotospovirus , and under natural conditions, is transmitted by the tiny insect, western flower thrips. Due to the high efficiency of virus transmission, chemical management of thrips vectors is often ineffective in preventing the spread of the disease. Utilization of genetic resistance will be a critical component for managing the disease; however, little is known about genetic sources of resistance in lettuce. Here, we evaluated 189 lettuce lines under natural disease pressure in four field experiments to identify INSV resistant germplasm. The stability of resistance was also evaluated using different inoculation methods under controlled conditions. Our results showed a significant variation ( p  
ISSN:0014-2336
1573-5060
DOI:10.1007/s10681-023-03285-z